Automatic method for milling complex channel-shaped cavities via coupling flank-milling positions
AssigneeD.P. Technology Corp.
InventorGiuliano Sona
Life of this patent
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Abstract
Methods and devices for milling a channel-shaped cavity by a five-axis computer numerical control (CNC) machine by selecting a workpiece to be machined, determining cutting tool flow along the channel-shaped cavity, determining cutting tool in-depth penetration, determining a trochoid path, and determining auxiliary movements.
Claims17
A method comprising:
- selecting a workpiece to be machined, wherein the workpiece has a bottom surface of a channel, a left wall of the channel, a right wall of the channel, and an entry point of a cutting tool;
- determining a set of extrapolated sequence of points based on extracting a sequence of points from a set of limit curves representing the left wall of the channel and the right wall of the channel;
- determining a primary set of flank-milling positions of the cutting tool based on a set of surfaces, the set of surfaces determined based on the set of extrapolated sequence of points;
- and
- determining a trochoidal path for the cutting tool based on the determined primary set of flank-milling positions of the cutting tool and coupling the set of determined primary flank-milling positions.
A device for generating instructions for a five-axis machining tool, the device comprising a processing module having addressable memory, the processing module configured to:
- repeat the following steps for a channel-shaped cavity, while at least one machining limitation parameter is not satisfied:
- determine cutting tool flow along the channel-shaped cavity, wherein the cutting tool flow is based on a set of extrapolated sequence of points extracted from a set of limit curves;
- determine cutting tool in-depth penetration from a top surface of the channel-shaped cavity towards a bottom surface of the channel-shaped cavity;
- and
- determine a trochoid path for the cutting tool based on the determined cutting tool flow along the channel-shaped cavity and the determined cutting tool in-depth penetration.
A device for generating instructions for a five-axis machining tool comprising a processing module having addressable memory, wherein the processing module is configured to:
- select a workpiece to be machined, wherein the workpiece has a bottom surface of a channel, a left wall of the channel, a right wall of the channel, and an entry point of a cutting tool;
- determine a set of extrapolated sequence of points based on extracting a sequence of points from a set of limit curves representing the left wall and the right wall of the channel;
- determine a primary set of flank-milling positions of the cutting tool based on a set of surfaces, the set of surfaces determined based on the set of extrapolated sequence of points;
- and
- determine a trochoidal path for the cutting tool based on the determined primary set of flank-milling positions of the cutting tool and coupling the set of determined primary flank-milling positions.
Dependencies are inferred from the claim text.